U.S. patent application number 16/641667 was filed with the patent office on 2021-12-16 for display panel and manufacturing method thereof.
This patent application is currently assigned to Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.. The applicant listed for this patent is Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.. Invention is credited to Fenghao CAI, Liying PENG.
Application Number | 20210391556 16/641667 |
Document ID | / |
Family ID | 1000005826781 |
Filed Date | 2021-12-16 |
United States Patent
Application |
20210391556 |
Kind Code |
A1 |
PENG; Liying ; et
al. |
December 16, 2021 |
DISPLAY PANEL AND MANUFACTURING METHOD THEREOF
Abstract
The present disclosure provides a display panel and a
manufacturing method thereof. The display panel includes a
substrate layer, a first block wall, a first inorganic layer, and
an organic layer, wherein the substrate layer includes a display
area and a non-display area; the first block wall is disposed in
the non-display area of the substrate layer and surrounds the
display area. a surface of the first block wall includes a
hydrophobic layer; the first inorganic layer covers the substrate
layer and exposes the first block wall; the organic layer is
disposed on the first inorganic layer and located in the display
area.
Inventors: |
PENG; Liying; (Wuhan,
CN) ; CAI; Fenghao; (Wuhan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Wuhan China Star Optoelectronics Semiconductor Display Technology
Co., Ltd. |
Wuhan |
|
CN |
|
|
Assignee: |
Wuhan China Star Optoelectronics
Semiconductor Display Technology Co., Ltd.
Wuhan
CN
|
Family ID: |
1000005826781 |
Appl. No.: |
16/641667 |
Filed: |
November 19, 2019 |
PCT Filed: |
November 19, 2019 |
PCT NO: |
PCT/CN2019/119325 |
371 Date: |
February 25, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 51/0097 20130101;
H01L 51/56 20130101; H01L 51/5253 20130101; H01L 51/5259
20130101 |
International
Class: |
H01L 51/52 20060101
H01L051/52; H01L 51/56 20060101 H01L051/56; H01L 51/00 20060101
H01L051/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 11, 2019 |
CN |
201911093278.7 |
Claims
1. A display panel, comprising: a substrate layer including a
display area and a non-display area; a first block wall disposed in
the non-display area of the substrate layer and surrounding the
display area, wherein a surface of the first block wall includes a
hydrophobic layer; a first inorganic layer covering the substrate
layer and exposing the first block wall; and an organic layer
disposed on the first inorganic layer and located in the display
area.
2. The display panel according to claim 1, wherein a material of
the first block wall is an organic material.
3. The display panel according to claim 2, wherein a material of
the hydrophobic layer includes one of a fluorine-containing alkyl
vinyl diol, a fluorine-containing alkyl vinyl diol, a
fluorine-containing acyl halide, or a fluoroalkyl methacrylate.
4. The display panel according to claim 1, wherein the first block
wall reacts with fluorine gas through free radical reaction to form
the hydrophobic layer.
5. The display panel according to claim 1, wherein the hydrophobic
layer is formed by chemical vapor deposition.
6. The display panel according to claim 1, wherein the first block
wall is flush with the organic layer.
7. The display panel according to claim 1, wherein the display
panel further includes a second block wall located between the
substrate layer and the first inorganic layer, and the second block
wall is arranged around the first block wall.
8. The display panel according to claim 1, wherein a material of
the second block wall is an organic material.
9. The display panel according to claim 1, wherein the display
panel further includes a second inorganic layer covering the first
inorganic layer, the first block wall, and the organic layer.
10. The display panel according to claim 1, wherein the substrate
layer includes a substrate, a flexible substrate, and an organic
light emitting structure which are sequentially disposed on the
substrate.
11. A manufacturing method of a display panel, comprising steps of:
providing a substrate layer, wherein the substrate layer includes a
display area and a non-display area; forming a first block wall on
the substrate layer surrounding the display area, and performing a
hydrophobic treatment on the first block wall; forming a first
inorganic layer on the substrate layer that exposes the first block
wall; and forming an organic layer on the first inorganic layer,
wherein the organic layer is located in the display area.
12. The manufacturing method of the display panel according to
claim 11, wherein a material of the first block wall is an organic
material.
13. The manufacturing method of the display panel according to
claim 12, wherein a material of the hydrophobic layer includes one
of a fluorine-containing alkyl vinyl diol, a fluorine-containing
alkyl vinyl diol, a fluorine-containing acyl halide, or a
fluoroalkyl methacrylate.
14. The manufacturing method of the display panel according to
claim 11, wherein the first block wall reacts with fluorine gas
through free radical reaction to form the hydrophobic layer.
15. The manufacturing method of the display panel according to
claim 11, wherein the hydrophobic layer is formed by chemical vapor
deposition.
16. The manufacturing method of the display panel according to
claim 11, wherein the first block wall is flush with the organic
layer.
17. The manufacturing method of the display panel according to
claim 11, wherein the display panel further includes a second block
wall located between the substrate layer and the first inorganic
layer, and the second block wall is arranged around the first block
wall.
18. The manufacturing method of the display panel according to
claim 17, wherein a material of the second block wall is an organic
material.
19. The manufacturing method of the display panel according to
claim 11, wherein the display panel further includes a second
inorganic layer covering the first inorganic layer, the first block
wall, and the organic layer.
20. The manufacturing method of the display panel according to
claim 10, wherein the substrate layer includes a substrate, a
flexible substrate, and an organic light emitting structure which
are sequentially disposed on the substrate.
Description
FIELD OF INVENTION
[0001] The present disclosure relates to the technical field of
display, and in particular, relates to a display panel, and a
manufacturing method thereof.
BACKGROUND OF INVENTION
[0002] Organic light-emitting diodes (OLEDs) are more sensitive to
moisture and oxygen. At present, the commonly used OLEDs-packaging
method is thin film packaging, which is that the organic film and
the inorganic film are alternately stacked to block moisture and
oxygen. The denseness of the inorganic film is better, which can be
used to block moisture and oxygen. The organic film can be mainly
used to relieve the internal stress of the inorganic film, while
also making the packaging layer have a certain flexibility.
[0003] However, the organic film layer is usually formed by liquid
leveling, and the formed film edge is not easily controlled. When
the overflow volume at edges is too much, and the inorganic film
layer cannot be covered, moisture and oxygen can infiltrate along
the edges of the organic film layer, resulting in package
failure.
SUMMARY OF INVENTION
Technical Problem
[0004] An organic film layer is usually formed by liquid leveling,
and the film forming edge is not easily controlled. When the edge
overflow volume is too much, and the inorganic film cannot be
covered, moisture and oxygen can infiltrate along the edges of the
organic film, resulting in package failure.
Technical Solution
[0005] The present disclosure provides a display panel and a
manufacturing method thereof, which is able to effectively suppress
overflow at edges of an organic layer.
[0006] In the first aspect, an embodiment of the present disclosure
provides a display panel, and the display panel includes:
[0007] a substrate layer including a display area and a non-display
area;
[0008] a first block wall disposed in the non-display area of the
substrate layer and surrounding the display area, wherein a surface
of the first block wall includes a hydrophobic layer;
[0009] a first inorganic layer covering the substrate layer and
exposing the first block wall; and
[0010] an organic layer disposed on the first inorganic layer and
located in the display area.
[0011] In the display panel of the embodiment of the present
disclosure, a material of the first block wall is an organic
material.
[0012] In the display panel of the embodiment of the present
disclosure, a material of the hydrophobic layer includes one of a
fluorine-containing alkyl vinyl diol, a fluorine-containing alkyl
vinyl diol, a fluorine-containing acyl halide or a fluoroalkyl
methacrylate.
[0013] In the display panel of the embodiment of the present
disclosure, the first block wall reacts with fluorine gas through
free radical reaction to form the hydrophobic layer.
[0014] In the display panel of the embodiment of the present
disclosure, the hydrophobic layer is formed by chemical vapor
deposition.
[0015] In the display panel of the embodiment of the present
disclosure, the first block wall is flush with the organic
layer.
[0016] In the display panel of the embodiment of the present
disclosure, the display panel further includes:
[0017] a second block wall located between the substrate layer and
the first inorganic layer, and the second block wall is arranged
around the first block wall.
[0018] In the display panel of the embodiment of the present
disclosure, a material of the second block wall is an organic
material.
[0019] In the display panel of the embodiment of the present
disclosure, the display panel further includes:
[0020] a second inorganic layer covering the first inorganic layer,
the first block wall, and the organic layer.
[0021] In the display panel of the embodiment of the present
disclosure, the substrate layer includes a substrate, a flexible
substrate, and an organic light emitting structure which are
sequentially disposed on the substrate.
[0022] In the second aspect, an embodiment of the present
disclosure provides a manufacturing method of a display panel, and
the manufacturing method of the display panel includes:
[0023] providing a substrate layer, wherein the substrate layer
includes a display area and a non-display area;
[0024] forming a block wall on the substrate layer surrounding the
display area, and performing a hydrophobic treatment on the first
block wall;
[0025] forming a first inorganic layer on the substrate layer that
exposes the first block wall; and
[0026] forming an organic layer on the first inorganic layer,
wherein the organic layer is located in the display area.
[0027] In the manufacturing method of the display panel of the
embodiment of the present disclosure, a material of the first block
wall is an organic material.
[0028] In the manufacturing method of the display panel of the
embodiment of the present disclosure, a material of the hydrophobic
layer includes one of a fluorine-containing alkyl vinyl diol, a
fluorine-containing alkyl vinyl diol, a fluorine-containing acyl
halide or a fluoroalkyl methacrylate.
[0029] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the first block wall reacts
with fluorine gas through free radical reaction to form the
hydrophobic layer.
[0030] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the hydrophobic layer is
formed by chemical vapor deposition.
[0031] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the first block wall is flush
with the organic layer.
[0032] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the display panel further
includes:
[0033] a second block wall located between the substrate layer and
the first inorganic layer, and the second block wall is arranged
around the first block wall.
[0034] In the manufacturing method of the display panel of the
embodiment of the present disclosure, a material of the second
block wall is an organic material.
[0035] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the display panel further
includes:
[0036] a second inorganic layer covering the first inorganic layer,
the first block wall, and the organic layer.
[0037] In the manufacturing method of the display panel of the
embodiment of the present disclosure, the substrate layer includes
a substrate, a flexible substrate, and an organic light emitting
structure which are sequentially disposed on the substrate.
Beneficial Effects
[0038] The embodiment of the present disclosure provides a display
panel including a substrate layer, a first block wall, a first
inorganic layer, and an organic layer, wherein the substrate layer
includes a display area and a non-display area; the first block
wall is disposed in the non-display area of the substrate layer and
surrounds the display area; a surface of the first block wall
includes a hydrophobic layer; the first inorganic layer covers the
substrate layer and exposes the first block wall; the organic layer
is disposed on the first inorganic layer and located in the display
area. By providing the hydrophobic layer on the first block wall,
overflow at edges of the organic layer can be effectively
suppressed.
DESCRIPTION OF DRAWINGS
[0039] FIG. 1 is a schematic structural view of a display panel in
the prior art.
[0040] FIG. 2 is a schematic structural view of a display panel
according to an embodiment of the present disclosure.
[0041] FIG. 3 is a flow chart of manufacturing method of the
display panel according to an embodiment of the present
disclosure.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0042] In order to more clearly illustrate technical solutions in
embodiments of the present disclosure, the drawings used in the
description of the embodiments will be briefly introduced below.
Obviously, the drawings in the following description are only some
embodiments of the present disclosure, but not all the embodiments.
Based on the embodiments in the present disclosure, all other
embodiments obtained by those skilled in the art without any
creative effort fall into the protection scope of the present
disclosure.
[0043] In the prior art, as shown FIG. 1, in order to suppress
overflow at edges of an organic layer 40, the structure of a block
wall 20 is usually provided on the periphery of a display area 11.
However, for making the organic layer 40 have a better leveling
effect in the display area 11, a first inorganic layer 30 of the
block wall 20 is often beneficial to the expansion of the organic
layer 40. Therefore, the arrangement of the block wall 20 still
cannot suppress the edge overflow of the organic layer 40 well in
the prior art.
[0044] For the described above, an embodiment of the present
disclosure provides a display panel and a manufacturing method
thereof, which is be described in detail below respectively.
[0045] Referring to FIG. 2, a schematic structural view of a
display panel according to an embodiment of the present disclosure
is illustrated, wherein the display panel 100 includes a substrate
layer 10, a first block wall 20, a first inorganic layer 30, and an
organic layer 40.
[0046] The substrate layer 10 includes a substrate 101, a flexible
substrate 102, and an organic light emitting structure 103, which
are sequentially disposed on the substrate 101, wherein the
substrate 101 is an array substrate for driving the light emitting
structure 103 to emit light. The substrate 101 is transparent,
translucent, or opaque. The flexible substrate 103 is made of a
flexible material, such as polyimide (PI). The flexible substrate
103 is able to increase a bending resistance of the display panel
100. The light emitting structure 103 is able to implement that
screen display of the display panel 100. It should be known that
the emitting structure 103 is disposed in the display area 11.
[0047] The first block wall 20 is disposed in the non-display area
12 of the substrate layer 10. The first block wall 20 disposed
around the display area 11 of the substrate layer 10. It should be
noted that a surface of the first block wall 10 includes a
hydrophobic layer 201.
[0048] In some embodiments, a material of the first block wall 20
is an organic material, and the first block wall is able to be
subjected to fluorination treatment.
[0049] Specifically, fluorine gas could be passed in, so that the
first block wall 20 and the fluorine gas react freely to form a
hydrophobic layer 201 containing a fluorine ion material on the
surface of the first block wall 20. For example, the hydrophobic
material is one of a fluorine-containing alkyl vinyl diol, a
fluorine-containing alkyl vinyl diol, a fluorine-containing acyl
halide, or a fluoroalkyl methacrylate.
[0050] In some embodiments, after the first block wall 20 is
formed, a fluorine-containing ion material layer is formed by
chemical vapor deposition, and then the fluorine-containing ion
material layer is etched to form the hydrophobic layer 201.
[0051] The first inorganic layer 30 covers the substrate layer 10,
and the first inorganic layer 30 exposes the first block wall 30.
It should be known that the first inorganic layer 30 covers the
light emitting structure 103, and the first inorganic layer is able
to protect the light emitting structure 103 to prevent the light
emitting structure 103 from being affected by external moisture or
oxygen.
[0052] A material of the first inorganic layer 30 is made of a
material with better hydrophobicity. For example, aluminum oxide
(Al.sub.2O.sub.3), aluminum nitride (AlN), aluminum nitride oxide
(AlON), silicon carbonitride (SiCN), magnesium oxide (MgO), calcium
oxide (CaO), tungsten oxide (WOx), titanium dioxide (TiO.sub.2),
titanium nitride (TiNx), titanium nitride (ZrO.sub.2), zirconium
nitride (ZrNx), Zinc oxide (ZnO), tantalum pentoxide
(Ta.sub.2O.sub.5), hafnium dioxide (HfO.sub.2), hafnium nitride
(HfNx), indium trioxide (In.sub.2O.sub.3), cerium oxide (CeOx), or
zirconium dioxide (ZrO.sub.2), etc.
[0053] The organic layer 40 is disposed on the first inorganic
layer 30. The organic layer 40 is located in the display area 11 of
the substrate layer 10. It should be known that the first block
wall 20 is flush with the organic layer 40. The organic layer 40
mainly functions as a buffer and is used to reduce the stress
between the first inorganic layer 30 and a second inorganic layer
60.
[0054] It should be known that the first inorganic layer 30 is
often beneficial of the expansion of the organic layer 40. Thus,
the first inorganic layer 30 is able to be formed on the substrate
layer 10 to expose the first block wall 20. At this time, the first
block wall 20 including the hydrophobic layer 201 and the organic
layer 40 may be directly contacted.
[0055] Specifically, the organic layer 40 has certain fluidity, and
the first block wall 20 including the hydrophobic layer 201 may
limit the organic layer 40 in the display area 11 surrounded by the
first block wall 20. The expansion of the organic layer 40 is
avoided to increase the width of the non-display area 12.
[0056] The first block wall 20 can effectively prevent moisture and
oxygen from entering the display panel 100 and prevent the display
panel 100 from being corroded by moisture and oxygen.
[0057] In some embodiments, the display panel 100 further includes
a second block wall 50. The second block wall 50 is disposed
between the substrate layer 10 and the first inorganic layer 30 and
disposed around the first block wall 20.
[0058] Specifically, the second block wall 50 is used to support a
mask used for making the inorganic layer 41. If the organic layer
40 overflows the display area 11 surrounded by the first block wall
20 during the process, the second block wall 50 also play a further
blocking role to prevent the organic layer 40 from being extended,
which is beneficial to the narrow frame of the display panel
100.
[0059] In some embodiments, a material of the second block wall 50
may be an organic material. For example, since a silicone material
has a small elastic modulus and good bending performance, the
display panel 100 is easily cracked during bending, which can
improve the bending resistance of the display panel 100.
Organosilicon materials contain silicon and oxygen, and have
desirable adhesion to inorganic film layers. When the display panel
100 is bent, the inorganic film layer is prevented from being
separated from the second block wall 50, and the lateral water
blocking ability and bending resistance of the display panel 100
are further enhanced.
[0060] In some embodiments, the display panel 100 further includes
a second inorganic layer 60, wherein the second inorganic layer 60
covers the first inorganic layer 30, the first block wall 20, and
the organic layer 40. The second inorganic layer 60 can effectively
prevent moisture or oxygen from entering the display panel 100 and
prevent the display panel 100 from being corroded by moisture or
oxygen.
[0061] A material of the second inorganic layer 60 is made of a
material with desirable hydrophobicity. For example, aluminum oxide
(Al.sub.2O.sub.3), aluminum nitride (AlN), aluminum nitride oxide
(AlON), silicon carbonitride (SiCN), magnesium oxide (MgO), calcium
oxide (CaO), tungsten oxide (WOx), titanium dioxide (TiO.sub.2),
titanium nitride (TiNx), titanium nitride (ZrO.sub.2), zirconium
nitride (ZrNx), Zinc oxide (ZnO), tantalum pentoxide
(Ta.sub.2O.sub.5), hafnium dioxide (HfO.sub.2), hafnium nitride
(HfNx), indium trioxide (In.sub.2O.sub.3), cerium oxide (CeOx), or
zirconium dioxide (ZrO.sub.2), etc.
[0062] Referring to FIG. 3, a flow chart of a manufacturing method
of the display panel according to an embodiment of the present
disclosure is illustrate, wherein the specific steps of the
manufacturing method of the display panel 100 is as follows:
[0063] Step 301, providing a substrate layer 10, wherein the
substrate layer 10 includes a display area 11 and a non-display
area 12.
[0064] Step 302, forming a first block wall 20 on the substrate
layer 10 surrounding the display area 11, and performing a
hydrophobic treatment on the first block wall 20.
[0065] Step 303, forming a first inorganic layer 30 on the
substrate layer 10 that exposes the first block wall 20.
[0066] Step 304, forming an organic layer 40 on the first inorganic
layer 30, wherein the organic layer 40 is located in the display
area 11.
[0067] In some embodiments, a material of the first block wall 20
is an organic material. The first block wall 20 is fluorinated to
form a hydrophobic layer 201 containing a fluorine ion material on
a surface of the first block wall 20. For example, a hydrophobic
material is one of a fluorine-containing alkyl vinyl diol, a
fluorine-containing alkyl vinyl diol, a fluorine-containing acyl
halide, or a fluoroalkyl methacrylate.
[0068] Specifically, fluorine gas could be passed in, so that the
first block wall 20 and the fluorine gas react freely to form a
hydrophobic layer 201 containing a fluorine ion material on the
surface of the first block wall 20. For example, the hydrophobic
material is one of a fluorine-containing alkyl vinyl diol, a
fluorine-containing alkyl vinyl diol, a fluorine-containing acyl
halide, or a fluoroalkyl methacrylate.
[0069] In some embodiments, after the first block wall 20 is
formed, a fluorine-containing ion material layer is formed by
chemical vapor deposition, and then the fluorine-containing ion
material layer is etched to form the hydrophobic layer 201.
[0070] As the described above, the embodiment of the present
disclosure provides a display panel 100 including a substrate layer
10, a first block wall 20, a first inorganic layer 30, and an
organic layer 40, wherein the substrate layer 10 includes a display
area 11 and a non-display area 12; the first block wall 20 is
disposed in the non-display area of the substrate layer and
surrounds the display area; a surface of the first block wall
includes a hydrophobic layer; the first inorganic layer covers the
substrate layer and exposes the first block wall; the organic layer
is disposed on the first inorganic layer and located in the display
area. By providing the hydrophobic layer on the first block wall,
overflow at edges of the organic layer can be effectively
suppressed.
[0071] In the above embodiments, the description of each embodiment
has its own emphasis. For a part that is not described in detail in
one embodiment, reference may be made to related descriptions in
other embodiments.
[0072] The display panel and the manufacturing method thereof
provided in the embodiments of the present disclosure have been
described in detail above. Specific embodiments are used herein to
explain the principle and implementation of the present disclosure.
The descriptions of the above embodiments are only used to help
understand the technical solution of the present disclosure and its
main ideas. Those of ordinary skill in the art should understand
that they can still modify the technical solutions described in the
foregoing embodiments, or equivalently replace some of the
technical features. These modifications or replacements do not make
the essence of the corresponding technical solutions outside the
scope of the technical solutions of the embodiments of the present
disclosure.
* * * * *